Asynchronous USB to simultaneous data converter board, interest check

Asynchronous USB Audio Class 2.0, galvanic isolation, two oscillators, and reclocked simultaneous data output. With U.FL output connectors it would be adequate companion to AYA II 2014 or DS board, and of course the great possibility to connect PC to Model S MkIII.

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AYA II DS, DIY edition

As announced a few months ago, we have another run of AYA II. This run, marked as DS, includes one update with respect to AYA II 2014: synchronous DEM clocking circuit is now more completely integrated, so it is not optional but integral part of this AYA II project.

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Model S MkIII schedule

In addition to S/PDIF, MkIII version of this converter will also include direct PCM input, able to accept both commonly used I2S and TDA1541A specific simultaneous data protocol.

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AYA II 2014 DIY edition, second run

As an extension of original AYA II 2014 DIY edition offer, here is the second turn of AYA II 2014 orders.

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AYA II 2014 DIY edition talks

Everything related to AYA II 2014 DIY edition building, parts and possible tweaks can be asked, discussed or shared at this page.

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AYA II 2014 DIY edition interest check

As a result of initiative by several TDA1541A fans at diyaudio.com, AYA II DAC may re-appear in 2014.

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OPA861 zero-feedback output stage of AYA II

The output stage of AYA II DAC, released back in 2007, now with details of circuit sitting behind originally posted block diagram. Dare to say, it might be the best I/V circuit published so far.

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PSU transformers, part 2: Model S USB inside

As a follow up to the previous article on transformers, here is how this part is done in the Model S USB. This is also the first public appearance of Model S USB interior.

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Model S MkII

Two and a half year after its release, the Model S goes through a couple of changes. Admittedly, there were no previous plans for substituting the Model S with MkII successor and, as perfected as it is, the overall architecture remains actually intact.

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D-09 discontinuation notice

Released in November 2009, D-09 was a sort of AYA II/III DACs successor, so moderately priced unit yet capable to address very serious requests. And what D-09 offered remained in fact unique in its price tag all the time: natural sound performance achieved by real audiophile architecture with fancy discrete analogue circuit, highly elaborated supplies and layout, and quality parts, and with everything packed into the cute chassis, featuring all types of commonly used inputs.

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